UNIDENTIFIED
XT-12
Processor | 8088/V-20 |
Processor Speed | 12MHz |
Chip Set | None |
Max. Onboard DRAM | 1MB |
Cache | None |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | Floppy drive interface |
NPU Options | 8087 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Floppy drive interface | FP1 | Speaker | JP4 |
Turbo LED | JP1 | Turbo switch | JP5 |
Keylock | JP2 | Power LED | JP6 |
Reset switch | JP3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP7 | N/A |
» | Factory configured - do not alter | JP8 | N/A |
» | CPU type select Intel 8088 | JP11 | Closed |
CPU type select NEC V20 | JP11 | Open |
DRAM CONFIGURATION | |
Size | Location |
256KB | (2) 44256 chips in U4 and U5 |
512KB | (4) 44256 chips in U3 through U6 |
768KB | (6) 44256 chips in U2 through U7 |
1MB | (8) 44256 chips in U1 through U8 |
BIOS CONFIGURATION | ||
Size | JP9A | JP9B |
8/16KB | Open | Open |
32KB | Closed | Open |
64KB | Closed | Closed |
FLOPPY DRIVE 0 CONFIGURATION | ||
Size | JP10A | JP10B |
360KB 5.25" | Closed | Closed |
720KB 3.5 | Open | Closed |
1.2MB 5.25 | Closed | Open |
1.44MB 3.5" | Open | Open |
FLOPPY DRIVE 1 CONFIGURATION | ||
Size | JP10C | JP10D |
360KB 5.25" | Closed | Closed |
720KB 3.5 | Open | Closed |
1.2MB 5.25 | Closed | Open |
1.44MB 3.5" | Open | Open |